The T-Bow is a curved rectangle of wood or plastic that you can use flat side down as a step, while the curve means you can use it like a Swiss ball for sit-ups. Turn it upside down to create a kind of seesaw or tie resistance bands to the edges to give your arms a workout. "It's like having a step, wobble board, Swiss ball and weights in one place," says Debbie Kneale, a T-Bow trainer.

Is it any good?

Using it as a step is good for cardio-vascular fitness, while the sit-ups and resistance band exercises improve muscle tone. You can also flip it over and try to stand on the outside edges for stability training. "You build up quite a sweat balancing on the edges, plus you are working the major muscle groups in your legs and training your core muscles at the same time," says Kneale.

Won't I fall off?

Once you get used to the seesaw movement, you shouldn't fall. The T-Bow trains your proprioception - your body's ability to sense movement within your joints - which will improve your balance and stability. A study by Zurich University found two sessions a week for eight weeks could improve balance by up to 30%.

Is it good for all ages?

Older and younger people can use the T-Bow too. Each exercise can be adapted as fitness and balance improve.